Is this full legit SATA speeds just like internal drives? I am running 2 FW800 external drives in daisy chain, and it's way too slow obv. Painful. I have a mid 2011 iMac with TB, so I should be okay with that right regarding full speeds yes? with an iMac and no nPM yet, I am gonna need it regardless for these eSATA externals. Oh I should say, the externals are brand new OWC Mercury Elite pro enclosures with WD Black drives in them. And I assume that SSD's perform at full speed on eSATA->TB.